fixes #426 expose BMC information in foreman UI

Signed-off-by: Ohad Levy <ohadlevy@gmail.com>

This patch also adds an abstracted power management class for both VM
and BM

fixes #2420 - extract strings for i18n from JavaScript, various i18n fixes

Fixes #2454 - Fix loading settings in production

The Setting subclasses are not preloaded in initialization phase in
production.

Also (if Setting.first rescue (false)) is not satisfied when the
settings are not set yet. Using table_exists? instead.

Also, define constants before audited So that the constants are available even...

fixes #2463 fixed nested puppetca and autosign controllers

remove autosign and puppetca nested controllers from being incorrectly nested classes

fixes #2378 - added Minitest and other code cleanups

new top-bar navigation design and a new login page

fixes #2429 - change OpenID storage to be permanent

Also fallback to form login when Signo fails and log a warning.
Make Signo SSO backend unavailable for API.

fixes #2428 - a workaround for an issue with SETTINGS[:libvirt] not being properly initialized in rpm environments

fixes #2407 - Add STI to settings model

Also adds some tests for rendering new/missing STI models, and
refactors the old default_settings loader into the new sub-models.

fixes #2248 adds api controllers and actions to access_permissions.rb